1.兩用橋：dual functional bridge

2.南京長(zhǎng)江大橋：Nanjing Yangtze Bridge

3.中國(guó)設(shè)計(jì)的：Chinese-designed

【1】第一段

【2】第二段

1.

2.

樞紐：hub

3.

facilitate -- make it easy -- bring convenience to 促進(jìn)

play a role in 起作用

promote 促進(jìn)